Loose-leaf binder.



P. KUHLMANN,

LS LEAF BINDER.

.rifmcmlmi ULEB Army 191:2.

1,033, 107. Patented July 23, 1912,

WITNRSSE INVENTOR onreine sTATns PATENT oFFioE.

FREDERICK J, P. KUHLMANN, F SAN FRANCISCO, CALIFORNIA, ASSGNOR T FLORA KENT, OF OAKLAND, CALIFORNIA* LOOSE-LEAF BINDER.

Application filed January 11', 1912.

To all whom it may concern: i

vBe it known that L Felini-inici; J.- P. KUHLMANN, a citizen of the United States, residing at San Francisco, in the county of San Franciseo'and State of California, have -..invented new and u'1eful Improvements in onse-Leaf Binders, ot' which the following `f is a specification. i The present linvention relates to improve- .1Q ments .in loose leat' binders, and especially to thatclass et binders employed for binding balance sheets and the like, in which the hal ance sheets can be in either one of two difierent transverse positions, so that the balance sheet may he secured, when desired', in such a posit-ion that one longitudinal marginal .portion thereof, preferably the right hand side, can he extended laterally beyond the 'edges of the remaining sheets, for bookkeep- Hin purposes. It has been the practice here-A to ore to effect this result hy forming each 1xbalance ,sheety with laterally extending slots, each slot havingcircular ends with a narrewer intervening portion.` For use with sheetsof this character, the yolres u on which the sheets are guided from their or- .'.Wardly to their rearwardly extending position, vare each formed with upright parts circular in cross section but with a connecting arch which in cross section is Hattened transversely or horizontally. In this way, the, balance sheet can be shifted from one lateral position to the other by raising said sheen the circular ends of the slots being guided upon the cylindrical posts, until the lsheet-is brought to thearches, .in which position the narrow intermediate parts of the siots can be moved past the thin or Hatte-ned arches of the yokes, so that the other circular endsfor" the slots can engage the posts, the lsheet being thon lowered' again either to the front' or rear maybe desired. It has heen found that this construction has several disadvaiidages. Particularly, by reason of the slot-s being of the form aboxe explained, .the paper around the slot isiformed With projections en opposite sides of the narrow i intermediate Aptntioris ofthe slot. These projections are exposed to considerable wear in pa sing over the arched portions of the i nd thus tend to become frayed. Also, con'iparativ from one l Specification of Letters Patent.

.ly easy to shift the balance ateral position to another, i therefore the halance sheets may be soI shifted accidentally and'arenot firmly and- Iatented July 23, 1912. Serial No. 670,558.

positively retained in theA position in which vthey are set.

One object of this invention is to provide a loose leaf binder which will avoid the ahoveobjections.

A furtherohject of the Ainvention is to provide such a binder which will be strong and durable.

In the accon'ipanying drawing, the ligure 1s a broken perspective view of a binder .of my improved construction.

Referring to the drawing, 1 indicates the back or frame of a binder, on which are erected two fixed posts 2 and in which can 4turn two movable posts 3, provided at their bases with suitable bearing plates 4. The posts 3 at their upper portions are extended to form arches 5, the lower free 'ends of which are recessed, as shown at 10, to lit snugly over conical upper ends of the posts 2, s'aid posts 2 and 3, with the arches 5 of the latter, thus forming yoltes. Said posts ,2 and 3 and arches 5 arecircular in cross section and of uniform diameter throughout.v Also extending upwardly from said frame Vare two stems 6, pointed at'their upper ends, theforward stem being in the same plane as the two p0sts2 and midway between them, and the rear stern being in the same plane as the rear posts 3 and midway between them. f

7 indicates a balance sheet.of which there may be any desired number. Said, balance sheet is formed near the top andat the longitudinal margins thereof with two slots S, which are rounded at the ends and of uniform width throughout., said Width being just sufficient to conveniently receive the posts or 3. By reason of the posts 2, arches and posts 3 being uniform 'in circular cross section, said sheet- 7 can, when said arches 5 engage the posts 2, very readily move so that its slots, instead of engaging theposts 2, engage the posts 3, or conversely. 'lhe balance sheet is likewise formed with twprirH cular holes 9 in line Withthe slots 8, which are in alinementI with each other and the holes are equifdistant from said slots 8 respectively, the distance-between ,the centers ot' the two holes being the saine as that between the centers of .the circular ends of either slot. Y

The mode of use of the readily be understood from the foregoing description. When it is desired to transfer device will very from the iront posts to the rear a-sheet,

either a balance sheet, or of other kind, thisv is done in the ordinary manner, a hole 9 being moved out of engagement with the front stem 6 and cominginto engagement with the rear stem 6. But when it is desired to move a balance sheet laterally, the balance sheet is first raised on the posts 2 or 3, whichever of these it is on', until the sheet is clear or free from the corresponding stem 6. It can-be then shifted laterally so that the other ends of the respective slots are in engagement with the arches 5. In this position it is then lowered again, a stem G then engaging the hole 9 other than that which was formerly engaged.

lt will he seen that. a binder of this con struction is free :from the defects above noted; 'I'hereare no Projecting edges of paper liable to become traycd by the lateral movement ot' the lmlanec'slieet.A AXlso the balance sheet is held positively and firmly. and without any possibility 'of aeeidental displaeement. Moreover the device is very strong and durablev` sinee the posts and arches may be made of uniform thickness and of eireular cross section. Also, b v reaL son o'l' theform ol said arehes, sheets can be transferred .trom the front to the rear'posts withthe least possible friction. I claim e i l. In combination with a loose leaf binder haelt having ereeted thereon a yoke for transferring sheets from front to rear and also a pair of frontand rear stems, a sheet having a slot to be engaged by one of the members of the yoke and having two perforations adapted alternately to be engaged -by the corresponding stem. Y-

portion slots in alinement with each other, and, between saidvslots, two holes equi-dis-V tant from ends of the respective slts and in line with the slots, each slot being of lengt-h not less than the sum of the lengths, in the same direction as that of the slots, of the holes and the. distance between the holes. v

In testimony whereof I have hereunto set, my hand in the presence of two subscribing witnesses. v FREDERICK J. P. KUHLMANN.

lVitnesses:

l M. VVRIGIIT, l). l. RiouARos'.

4. A sheet having through a margina. 

